Franck hertz experiment pdf

1927, which confirmed the de Broglie hypothesis. This franck hertz experiment pdf, advanced by Louis de Broglie in 1924, says that particles of matter such as electrons have wave-like properties. According to Maxwell’s equations in the late 19th century, light was thought to consist of waves of electromagnetic fields and matter was thought to consist of localized particles.


Nobel Prize in Physics in 1921. Germer experiment was made by Walter M. Elsasser in Göttingen in the 1920s, who remarked that the wave-like nature of matter might be investigated by electron scattering experiments on crystalline solids, just as the wave-like nature of X-rays had been confirmed through X-ray scattering experiments on crystalline solids. Max Born to physicists in England.

When the Davisson and Germer experiment was performed, the results of the experiment were explained by Elsasser’s proposition. However the initial intention of the Davisson and Germer experiment was not to confirm the de Broglie hypothesis, but rather to study the surface of nickel. In 1927 at Bell Labs, Clinton Davisson and Lester Germer fired slow moving electrons at a crystalline nickel target.

The angular dependence of the reflected electron intensity was measured and was determined to have the same diffraction pattern as those predicted by Bragg for X-rays. At the same time George Paget Thomson independently demonstrated the same effect firing electrons through metal films to produce a diffraction pattern, and Davisson and Thomson shared the Nobel Prize in Physics in 1937. Germer experiment confirmed the de Broglie hypothesis that matter has wave-like behavior.

Davisson began work in 1921 to study electron bombardment and secondary electron emissions. A series of experiments continued through 1925. Davisson and Germer’s actual objective was to study the surface of a piece of nickel by directing a beam of electrons at the surface and observing how many electrons bounced off at various angles.

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